The megastore chain is planning to hold a grand opening for its second Raynham store on March 12, according to a Walmart representative.

“We’re just about ready, stocking the shelves and preparing to open our doors,” said store manager Ashley Viveiros.

The new Walmart on Broadway will allow the company to capitalize on the two major highways that go through the region, Interstate 495 and Route 24, bringing potential customers from nearby areas on each side of town.

“We think it’s going to be a great asset to the community,” said Bill Wertz, a Walmart spokesman. “We frequently locate more than one Walmart in a community. … We are always looking for locations where we can make shopping convenient.”

Walmart representatives said that the new Route 138 superstore is hiring around 300 associates to work there, with a hiring center nearby at 770 Broadway, Suite 8.

The approximately 152,000-square-foot store will include a full line of groceries and a wide assortment of merchandise, and will compete with the neighboring Market Basket supermarket. The inception of the second Raynham Walmart dates back to 2005, when the company had its first public hearings about the subject, drawing large crowds of concerned citizens worried about the impact of the store.

Market Basket’s parent company, Demoulas, challenged the Raynham Planning Board’s eventual approval of the Route 138 Walmart site in Superior Court, but the decision was upheld after a long trial and an appeal in Massachusetts Appeals Court.

Last week, construction workers could be seen working in the street in front of the new Walmart, installing new traffic signals that will be used to direct motorists into the store’s parking lot.

“We certainly want access to the store to be safe and convenient,” Wertz said.

As Walmart prepares to open its new location, a committee studying the Route 138 corridor and a potential zoning overlay district for the area reconvened recently, Raynham Town Planner John Charbonneau said at a January selectmen’s meeting.

While there are many businesses along Route 138, the road is surrounded by residential areas. In the past, residents have been vocal about their opposition to efforts to turn residential zones on Route 138 into business zones.

The new Walmart will have at least 800 parking spaces, according to prior Taunton Gazette reports on the company’s publicly filed site plans.

Previously, residents in the neighborhood have expressed concerns about the increased traffic.

The Raynham Police Department also spoke previously about increased police calls that can be expected with the new Walmart, which will be open 24 hours a day. Police Chief James Donovan has said that the original Raynham Walmart on Route 44 generated 758 logged police calls in 2011 alone, out of 13,500 total calls.